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MyMaki Hotend Mount for E3D v5 on Makibox

by MyMakibox, published

MyMaki Hotend Mount for E3D v5 on Makibox by MyMakibox Feb 21, 2014
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Summary

Update 31 Aug 2014: A "tighter" fitting version has been added. This may reduce wobble/enhance precision slightly.
Update: Looking for the E3D v6 mount? It's here:
https://www.youmagine.com/designs/mymaki-hotend-mount-for-e3d-v6-on-makibox
This mount is designed to hold an E3D v5 hot-end. In addition to holding the hot-end firmly, it supports the rods, maintaining a 90 degree angle between them thereby improving positional accuracy.
3D printing with ABS creates a mount that works well. This model is also suitable for CNC, which should create a much more rigid structure.
Aside from the E3D, other "Groovemount" hot ends should also fit.
While the piece has screw-holes for maximum tension, I've found zip-ties are an adequate and convenient way to keep appropriate tension between the pieces.
CAD by Davide using FreeCAD
Video: http://youtu.be/pH2j_vyahOY

Instructions

Print the lower piece as is, and the upper piece upside down.
File and lubricate the pieces until they ride easily on the rails.
Insert the hotend, and keep the pieces aligned with cable-ties, toothpicks or screws.

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could someone print this out for me my hot end died :(

sry;i konw this is another topic,but i discover a solution for your newest problem mymakibox and i cant commont on your blog. so here:
there's no place for thread locks.
take: thread lock fluid.you can get it really cheap on amazon.2gramm tube is enough. (thank you soo much for your firmware)

I've been thinking about that too, Marcus! The fins of the E3D heatsink are just a little too big for it to fit within the rods (25mm diameter vs 20mm gap between rods). But it should be possible to mount the heatsink above the rods, and have the heater block poke through the rods. It looks like there is nothing to physically stop the hot end being raised that way. My worry is that no other printer does that, so maybe there are engineering challenges.. Maybe it's too hard to keep the hot-end rigidly vertical with a high centre of gravity?

To hold it rigidly, I was thinking to hollow out the existing mount so it grips the rods, but doesn't touch the heater block. Then it could hold the hot end via a tight fan shroud like this:

http://www.thingiverse.com/thing:227761http://www.thingiverse.com/thi...

The current build is reversible. The putty is quite loosely attached to the POM, and that seems adequate as the Z-axis moves slowly and the screw only needs to make very gentle contact with the z-stop. I set up up as a temporary fix, with a longer screw than necessary, but haven't needed to change it.

E3D Fan Shroud
by tjb1

Can we modify this to have the smoth rods below or next to the cooling fins of the E3D?
That would remove the need to modify the Z endstop, not reduce the Z build volume and make the switch to the E3D hotend reversible.

A description of how to setup the E3D is published here, but currently only in draft form.

http://mymakibox.blogspot.com/2014/03/upgrading-your-hotend-to-e3d-v5.htmlhttp://mymakibox.blogspot.com/...

I haven't noticed any loss of build area from the mount. Compared to the stock makibox hotend, the E3D is taller and needs a fan, and those have a bigger impact. My current build triggers the z-stop 12mm lower, but that is more than necessary.

Very nice design, curious though, did you lose any build area in the X or Y axis? If so roughly how much?

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